类别:数值函数 (三角函数) PI¶ 将 pi 的值作为浮点值返回。 语法¶ CopyExpandPI() Show lessSee moreScroll to top Returns¶ This function returns a value of type FLOAT. 示例¶ CopyExpandSELECT PI(); Show lessSee moreScroll to top Expand+-------------+ | PI() | |-------------| | 3.141592654 | +-------------+ Show lessSee moreScroll to top